About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development IV: Rapid Development
|
Presentation Title |
Ceramic–metal Composites Using Ceramic 3D Printing and Centrifugal Infiltration |
Author(s) |
Shahbaz Mahmood Khan, Ling Li |
On-Site Speaker (Planned) |
Shahbaz Mahmood Khan |
Abstract Scope |
The study of natural materials has enabled mankind with principles for the design of novel composite materials. In this work, we use stereolithographic 3D printing of ceramic preforms which are, post-sintering, infiltrated with aluminum alloy using centrifugal infiltration to produce 2D and 3D interpenetrating composites inspired by the prismatic layers of bivalve molluscan shells. The proposed method provides flexibility in the design of individual composite phases and advantages in terms of scalability. The specific compressive strength of composites was recorded to be as high as 169% the specific compressive strength of the monolithic aluminum alloy. Additionally, the highest fracture toughness was measured to be 12.9 MPa m1/2. Toughening mechanisms such as ductile phase deformation, ceramic confinement and crack deflection at interfaces were observed. The porosity in the ceramic phase, measured using tomographic structural analysis, was found to be 15% and it is believed that the performance of composites may further be improved by reducing defects and porosity in the ceramic phase. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Other |